[MacPorts] #66229: glib-2.70.5:Uses GCC 4.2 instead of present GCC 7, leading to build failure.

[MacPorts]

#66229: glib-2.70.5:Uses GCC 4.2 instead of present GCC 7, leading to build
failure.
----------------------+--------------------
 Reporter:  AutumnHW  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.7.0
 Keywords:            |       Port:  glib2
----------------------+--------------------
 Build failure occurs on Apple GCC4.2, because of a pragma related issue.
 Hardcoding the compiler and linkers to GCC7 in build.ninja resolves the
 issue.

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Ticket URL: <https://trac.macports.org/ticket/66229>
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